How to: Charge Your Phone with a 9-Volt Battery

This is real MacGyver territory. I've been stuck in a handful of urban survival situations and the inevitably dying phone battery is by far one of the more pressing issues. Most important will of course be immediate safety, shelter, water and food, etc., but it's likely that the use of a phone will help you secure those things. And when the power is knocked out it can be a real challenge.   … Continue reading on ManMadeDIY.com

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